<div class="pure-table">
    <form class="pure-form pure-form-stacked">
        <label>User</label>
        <input type='text' id="username" name='username' placeholder="Username"></td>

        <label>Password</label>
        <input type="password" id="password" name="password" placeholder="Password">

        <button type="submit" name="submit" id="login" class="pure-button pure-button-primary">Sign in</button>
    </form>
</div>
